The first timekeeper designed specifically for the bands timekeeper, TAMAs Rhythm Watch had everything a drummer needed to make sure the time was right live and in the studio. The original Rhythm Watch featured enough volume to play with real drums, a large, easy-to-read display, a dial for quick tempo adjustments, separate volumes for quarter notes, eighths and triplets the list went on and on. The second generation RW105 features a backlit display, 30 different memory settings, and up to nine different beat divisions. The only thing we didn't change was the simplicity.